# 1991 Lufthansa Cup German Open – Singles

Steffi Graf defeated Arantxa Sánchez Vicario in the final, 6–3, 4–6, 7–6$^{(8–6)}$ to win the singles tennis title at the 1991 WTA German Open.
Monica Seles was the reigning champion, but chose not to participate.

## Seeds

The top eight seeds received a bye to the second round.
* Steffi Graf (champion)
* Gabriela Sabatini (third round)
* Mary Joe Fernández (third round)
* Jana Novotná (semifinal)
* Arantxa Sánchez Vicario (final)
* Katerina Maleeva (second round)
* Jennifer Capriati (semifinal)
* Helena Suková (third round)
* Leila Meskhi (first round)
* Nathalie Tauziat (first round)
* Natalia Zvereva (third round)
* Sandra Cecchini (third round)
* Judith Wiesner (first round)
* Anke Huber (quarterfinal)
* Laura Gildemeister (second round)
* Mercedes Paz (second round)

## Draw
### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking

### Finals

| Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| 1 | Steffi Graf | 6 | 6 | | | | | | | | | | |
| | Radomira Zrubáková | 3 | 2 | | | | | | | | | | |
| | Radomira Zrubáková | 3 | 2 | 1 | Steffi Graf | 6 | 6 | | | | | | |
| | | | | 4 | Jana Novotná | 1 | 0 | | | | | | |
| 4 | Jana Novotná | 6 | 6 | 4 | Jana Novotná | 1 | 0 | | | | | | |
| | Ginger Helgeson | 1 | 2 | | | | | | | | | | |
| | Ginger Helgeson | 1 | 2 | | | | | | 1 | Steffi Graf | 6 | 4 | 7 |
| | | | | | | | | | 5 | Arantxa Sánchez Vicario | 3 | 6 | 6 |
| 7 | Jennifer Capriati | 6 | 6 | | | | | | | | | | | 5 | Arantxa Sánchez Vicario | 3 | 6 | 6 |
| | Julie Halard | 3 | 2 | | | | | | | | | | |
| | Julie Halard | 3 | 2 | 7 | Jennifer Capriati | 5 | 7 | 4 | | | | | |
| | | | | 5 | Arantxa Sánchez Vicario | 7 | 5 | 6 | | | | | |
| 5 | Arantxa Sánchez Vicario | 6 | 6 | 5 | Arantxa Sánchez Vicario | 7 | 5 | 6 | | | | | |
| 14 | Anke Huber | 0 | 2 | | | | | | | | | | |

### Top half
#### Section 1

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 1 | S Graf | 6 | 6 | | | | | | | | | | |
| | K Kschwendt | 5 | 0$^r$ | | Q | N Jagerman | 2 | 3 | | | | | | | | | | |
| Q | N Jagerman | 7 | 1 | | | | | | | 1 | S Graf | 6 | 6 | | | | | |
| | E Brioukhovets | 6 | 2 | 7 | | | | | | | E Brioukhovets | 0 | 1 | | | | | |
| | S Rehe | 3 | 6 | 6 | | E Brioukhovets | 2 | 6 | 6 | | | | | | | | | |
| | M Maleeva | 6 | 6 | | | M Maleeva | 6 | 2 | 3 | | | | | | | | | |
| 13 | J Wiesner | 0 | 3 | | | | | | | | | | | | 1 | Steffi Graf | 6 | 6 |
| 9 | L Meskhi | 2 | 2 | | | | | | | | | | | | | Radomira Zrubáková | 3 | 2 |
| | R Zrubáková | 6 | 6 | | | R Zrubáková | 2 | 6 | 6 | | | | | | | | | |
| | H Cioffi | 6 | 6 | | | H Cioffi | 6 | 4 | 1 | | | | | | | | | |
| | K Düll | 2 | 1 | | | | | | | | R Zrubáková | 7 | 0 | 6 | | | | |
| Q | A Coetzer | 6 | 6 | | | | | | | Q | A Coetzer | 6 | 6 | 1 | | | | |
| | V Martinek | 3 | 3 | | Q | A Coetzer | 6 | 7 | | | | | | | | | | |
| | | | | | 6 | K Maleeva | 2 | 6 | | | | | | | | | | |

#### Section 2

| First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | 4 | J Novotná | 6 | 6 | | | | | | | | | | |
| Q | A Popp | 1 | 6 | | R McQuillan | 4 | 4 | | | | | | | | | | |
| | R McQuillan | 6 | 7 | | | | | | 4 | J Novotná | 6 | 3 | 6 | | | | |
| | C Dahlman | 1 | 1 | | | | | | 12 | S Cecchini | 3 | 6 | 3 | | | | |
| | A Grossman | 6 | 6 | | A Grossman | 2 | 2 | | | | | | | | | | |
| Q | S Meier | 2 | 0 | 12 | S Cecchini | 6 | 6 | | | | | | | | | | |
| 12 | S Cecchini | 6 | 6 | | | | | | | | | | | 4 | Jana Novotná | 6 | 6 |
| 16 | M Paz | 6 | 6 | | | | | | | | | | | | Ginger Helgeson | 1 | 2 |
| | E Švíglerová | 4 | 4 | 16 | M Paz | 6 | 3 | | | | | | | | | | |
| | L Savchenko | 3 | 0 | | G Helgeson | 7 | 6 | | | | | | | | | | |
| | G Helgeson | 6 | 6 | | | | | | | G Helgeson | 6 | 6 | | | | | |
| | I Cueto | 1 | 4 | | | | | | 8 | H Suková | 4 | 3 | | | | | |
| | F Labat | 6 | 6 | | F Labat | 3 | 6 | 1 | | | | | | | | | |
| | | | | 8 | H Suková | 6 | 2 | 6 | | | | | | | | | |

### Bottom half
#### Section 1

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 7 | J Capriati | 6 | 6 | | | | | | | | | |
| Q | S Martin | 6 | 6 | | Q | S Martin | 2 | 4 | | | | | | | | | |
| | K Rinaldi | 2 | 3 | | | | | | | 7 | J Capriati | 6 | 6 | | | | |
| | P Ritter | 3 | 6 | | | | | | | 11 | N Zvereva | 1 | 1 | | | | |
| | W Probst | 6 | 7 | | | W Probst | 5 | 5 | | | | | | | | | |
| | C Kohde-Kilsch | 1 | 2 | | 11 | N Zvereva | 7 | 7 | | | | | | | | | |
| 11 | N Zvereva | 6 | 6 | | | | | | | | | | | 7 | Jennifer Capriati | 6 | 6 |
| 10 | N Tauziat | 1 | 0 | | | | | | | | | | | | Julie Halard | 3 | 2 |
| | J Halard | 6 | 6 | | | J Halard | 6 | 6 | | | | | | | | | |
| | F Bonsignori | 2 | 7 | 5 | | F Bonsignori | 1 | 0 | | | | | | | | | |
| Q | B Fulco | 6 | 6 | 1$^r$ | | | | | | | J Halard | 7 | 6 | | | | |
| | B Rittner | 6 | 7 | | | | | | | 3 | M Joe Fernández | 5 | 3 | | | | |
| | R Rajchrtová | 1 | 6 | | | B Rittner | 4 | 7 | 2 | | | | | | | | |
| | | | | | 3 | M Joe Fernández | 6 | 6 | 6 | | | | | | | | |

#### Section 2

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 5 | A Sánchez Vicario | 6 | 6 | | | | | | | | |
| Q | A Kijimuta | 6 | 6 | | Q | A Kijimuta | 2 | 0 | | | | | | | | |
| | J Durie | 3 | 2 | | | | | | 5 | A Sánchez Vicario | 6 | 6 | | | | |
| | M Kochta | 4 | 6 | 6 | | | | | | N Provis | 1 | 1 | | | | |
| | N Provis | 6 | 1 | 7 | | N Provis | 6 | 7 | | | | | | | | |
| Q | F Romano | 3 | 1 | | 15 | L Gildemeister | 2 | 6 | | | | | | | | |
| 15 | L Gildemeister | 6 | 6 | | | | | | | | | | 5 | Arantxa Sánchez Vicario | 6 | 6 |
| 14 | A Huber | 6 | 6 | | | | | | | | | | 14 | Anke Huber | 0 | 2 |
| | P Langrová | 4 | 0 | | 14 | A Huber | 6 | 6 | | | | | | | | |
| | L Garrone | 7 | 6 | | | L Garrone | 3 | 1 | | | | | | | | |
| | K Piccolini | 6 | 1 | | | | | | 14 | A Huber | 7 | 6 | | | | |
| | R Fairbank-Nideffer | 3 | 0 | | | | | | 2 | G Sabatini | 5 | 3 | | | | |
| | N Sawamatsu | 6 | 6 | | | N Sawamatsu | 1 | 0 | | | | | | | | |
| | | | | | 2 | G Sabatini | 6 | 6 | | | | | | | | |